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Norma-Jean [14]
2 years ago
12

Factorise completely a). 3xy - 9x b). x² - 4 c). 2x² + 5y + 1​

Mathematics
1 answer:
Keith_Richards [23]2 years ago
8 0

Answer:

a) 3x(y-3)

b) (x-2)(X+2)

Step-by-step explanation:

See the steps below:) You can also use the app photo math, you take a picture and it will give you the answer and explain the steps:)

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How do you do this ?? I need steps
Ksivusya [100]
Do it yourself :D #bye
4 0
3 years ago
Bonjour, pouvez vous m'aidez svp ^^ Ci-contre, [MH] est une hauteur du triangle MAT. Éva affirme que le périmètre du triangle MA
Anna35 [415]

Cette question est incomplète.

Question complète

Exercer:

En face, [MH] est une hauteur du triangle MAT.

a.Calculer MH, puis HT.

b. Eva dit: "".

A-t-elle raison? Expliquer.

MA = 7,8cm

MT = 7,5cm

AH = 3cm

Answer:

La réponse d'Eva est incorrecte

Step-by-step explanation:

Nous résolvons les questions abive en utilisant le théorème de Pythagore

c² = a² + b²

a) Application de la formule ci-dessus:

Étape 1

Trouver MH

MA² = MH² + HA²

7,8² = MH² + 3²

MH² = 60,84-9

MH² = 51,84

MH = √51,84

MH = 7,2 cm

Étape 2

Résoudre pour HT

MT² = MH² + HT²

7,5² = 7,2² + HT²

HT² = 56,25 à 51,84

HT = √4,41

HT = 2,1 cm

b) La formule pour le périmètre du triangle MAT =

MA + MT + AH + HT

= 7,8 + 7,5 + 2,1 + 3 = 20,4 cm

Le périmètre du triangle MAT est de 20,4 cm

Donc, la réponse d'Eva est incorrecte

8 0
3 years ago
66,649 is 70% of what number
Ratling [72]
66649 is 70% of 95 212.8571
6 0
3 years ago
Help plzzzz guys, I'll mark you as a brainiest
umka2103 [35]
Diagonally

the top of the closet
8 0
3 years ago
5.3x = 26.5<br> Answers <br><br> 21.2<br> 5.2<br> 3<br> 5
Studentka2010 [4]

Answer:

the answer is 5

Step-by-step explanation:

5.3x5=26.5

7 0
2 years ago
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